While the German company is known for its long line of race-winning sports cars, its Cayenne SUVs and Panamera sedans are the real breadwinners of its automotive family. Indeed, Porsche’s fast but clunky-looking four-door vehicles have arguably kept the business going.

Now the company is expanding its range of Panamera sedans to include two seemingly unlikely versions: a plug-in hybrid and an extended-wheelbase “Executive” model. The new models are part of a wider revision of the Panamera lineup that includes a number of mechanical and cosmetic updates.

The new Panamera S E-Hybrid has a 95-horsepower electric motor, compared with 47 horsepower for its predecessor the Panamera S Hybrid, and its battery has more capacity.

The car may sound like a plush version of the Prius Plug-In, but the similarities are limited. The new Porsche puts out 416 horsepower between its gasoline and electric power plants, has an estimated electric only-range of more than 20 miles and can travel at up to 84 miles per hour on battery power alone.

To build the new Executive models, Porsche stretched the already-long Panamera by 5.9 inches to make more room in the back seat. The company said its decision to build a limousine version of the sedan was driven in part by high demand for optional lounge-like rear bucket seats in earlier Panameras.

So Porsche, long known as a driver’s car, is becoming the kind of car for which you hire a driver.

Prices for the new Panamera range from $78,100 for the base model to $161,100 fo rthe Turbo Executive. The S E-Hybrid costs $99,000. Porsche said it will reveal more details when the revised Panamera lineup makes its world debut at the Auto China show in Shanghai later this month.